Extraction and partial purification of ricin from Ricinus communis L.

Ricinus communis L., usually cultivated for production of oil, has some use in medicine, cosmetic industries and as motor oil. The defatted seed meal is very toxic, and can not be used as human or animal food.

Some electrical properties of cerebroside and lecithin bilayer membranes.

Electrical potentials of cerebroside and lecithin bilayers in the presence of Na+, Ca2+, and Sr2+ were measured. Calculated membrane specific resistances were about 10(7) ohm cm2. Calculated transference numbers for Na+, Ca2+, and Sr2+ were between 0.